import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from "../components/Login.vue"
import Home from "../components/Home.vue"
import Welcome from '../components/Welcome.vue'
import Users from '../components/users/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import List from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Order.vue'
import Report from '../components/report/Report.vue'

Vue.use(VueRouter)

const routes = [
    { path: '/', redirect: '/login' },
    { path: '/login', component: Login },
    {
        path: '/home',
        component: Home,
        redirect: '/welcome',
        children: [
            { path: '/welcome', component: Welcome },
            { path: '/users', component: Users },
            { path: '/rights', component: Rights },
            { path: '/roles', component: Roles },
            { path: '/categories', component: Cate },
            { path: '/params', component: Params },
            { path: '/goods', component: List },
            { path: '/goods/add', component: Add },
            { path: '/orders', component: Order },
            { path: '/reports', component: Report }
        ]
    }
]

const router = new VueRouter({
    routes
})

//挂载路由导航守卫
router.beforeEach((to, from, next) => {
    //to将要去往哪个路径
    //from代表从哪个路径跳转过来
    //next是一个函数表示放行
    //    next()    next('/login')强制跳转到某个页面
    //1.判断是否跳转的是登录页
    if (to.path === '/login') return next()
        //2.不是登录页代表访问有权限的接口需要携带token
        //2.1从sessionStorage中获取token
    var tokenStr = sessionStorage.getItem('token')
    if (!tokenStr) return next('/login')
    next()
})

export default router